SLA_EQGAL - J2000 $\alpha,\delta$ to Galactic

ACTION:

Transformation from J2000.0 FK5 equatorial coordinates to IAU 1958 galactic coordinates.

CALL:

CALL sla_EQGAL (DR, DD, DL, DB)

GIVEN:

DR,DD

D

J2000.0 $[ \alpha,\delta ]$ (radians)

RETURNED:

DL,DB

D

galactic longitude and latitude $[ l^{I\!I},b^{I\!I} ]$ (radians)

NOTE:

The equatorial coordinates are J2000.0 FK5. Use the routine sla_EG50 if conversion from B1950.0 FK4 coordinates is required.

REFERENCE:

Blaauw et al., 1960, Mon.Not.R.astr.Soc., 121, 123.